Sewing-machine



A, EPPLER. SEWING MACHINE.

APPLICATION FILED JAN. 16' 1918.

1,392,822. Patented 02.4., 1 921.

2 SHEETS-SHEET I- A. EPPLER. sEwms MACHINE. APPLICATION FILED 1A 16'1918- Patented Oct. 4 1921.

2 swans-sun? 2.

r: STATES:

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ANDREW EPPLETRI, LYNN, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHIN-ERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SEWING-MACHINE. v

Patented Oct. 4:, 1921.

Original application filed November 27, 1916, Serial No. 133,625.Divided and this application filed January 16, 1918.

To all whom it may concern:

Be it known that I, ANDREW EPPLER, a

citizen of the United States, residing at Lynn, in the county of Essexand State of Massachusetts, have invented certain new and usefulImprovements in Sewing-Machines; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which vit appertains to makeand use the same.

This invention relates to waxed thread.

melted wax, such receptacle being placed between the thread supply andthe stitchforming devices in orderto. impregnate the thread with waxbefore the seam is formed. The wax receptacle is usuallylocated at aconsiderable distance from the stitch-formingdevices, and inorderto'keep the waxed T needle by a looper secured in a looper carrierwhich has a compound motion so as to move the end of the looper in asubstan-- tially circular pathabout the needle. It-is desirable that thelooper should be heated ,to

1 keep the thread in proper condition as it is laid about the needle,and difliculty has beenexperienced heretofore in providing means to keepthe looping device properly heated.

It'is accordingly the object of this in-.

vention to provide simplified and improved devices for 'heatinglthelooper. With this object in view, a feature of the invention consists inthe, provision of a looper arranged to have a reciprocatory, sliding andoscillatory motion about a horizontal bearing, in which'at one end isformed a U- shaped steam passage which extends through the greater partof its length so as to heat said bearing, and by conduction constantlyheat the looper.

Serial No. 212,042.

In machines in which the looper is heated and the wax on the thread isin a melted condltion as the thread passes through the looper, wax fromthe thread frequently drops upon and collects on the channel guide sothat the operator has to remove it.

, A further object of the invention is, therefore, to provide means forheating the channel guide. To this end the invention contemplates theprovision of a channel guide having a sleeve or recess formedtherein,

in which is received a spring-pressed plunger held by such spring inengagement with the heated bearing of the looper in all positions ofthechannel guide, so' as to heat said channel guide by direct metallicconduction from the heated looper bearing.

With these objects in view, other features ofthe invention consist incertain novel and improved constructions, arrangements and combinationsof parts hereinafter described andparticularly pointed out inthe claims,the advantages of which will be obvious to those skilled in the art. 7

This application is a division of vapplication Serial No. 133,625, filedNovember 27, 1916, and the invention is herein illustrated as embodiedin the machine forming the subject-matter of said application.

The features of the, present invention will be clearly understood fromthe following detailed description and accompanying drawings, in whichFigure 1 is a side elevation of a sewing machine embodying the presentinvention, looking from the right; Fig. 2 is a side elevation lookingfrom the left; Fig. 3 is a front elevation of parts of the Y machine,including particularly the mechanism for supporting and guiding thelooper and for heating the looper and the channel guide. i

The machine as shown is provided with the usual stitch-forminginstrumentalities includinga curved hook needle 1, an awl or feed point2, a looper 3, achannel guide 4:, a back gage 5, and a backrest 6. Thismechanism is actuated by the main cam shaft A bearing the usual diskcams. The looper mechanism is shown particularly in Figs. 2 and 3. Thelooper 3 is fixed in a carrier 7 which comprises two sleeves 8 and 9connected integrally and by a yoke 10. The sleeves are fitted to slideand rock upon a cylindrical bearing member 11 at the front of themachine. This bearing member'is supported at a point intermediate itsends inva bracket 12 which is screwed to the frame of-the machine, thebearing member being fixed in the bracket by means of a cotter pin (notshown). The yoke '10 spans the bracket 12 so'that the looper carrier maybe moved'both longitudinally and rota tably upon the bearing member, andthe substantial distance which separates the point of'engagementof thesleeves with the bearing member insuresrthat there shall be 1 a minimum.degree of lost motion between the parts, and a correspondingly highdegree of accuracy in the control of the move ments of thelooper.

The looper is actuated, by the cams on the main shaft, and itstraversing,movements are produced by a cam lever 13 (Fig. 2) whichcarries at'itslower end a. roller ena ing in a )erijheral roove on oneof the, g e a camdisks on the shaft At itsupper end the cam lever isfixed to a-forwardl-y extending rock shaft 14. A. lever 15 depends fromthe forward end of the rock shaft, and the lower end .of this leverisslott'ed as shown in Fig. 2 and embraces a block 1J6which is pivotedon L a stud 17 projectingfrom theyoke 10. Through this arrangement therocking movements of the: cam lever are transmitted to the loopercarrier so as to slide .the latter longitudinally on the bearing member11, while by theuse of the block 16. and. the slotted end of the lever15 interference with the rocking movements of the looper carrier isavoided. -The rocking movements of the looper carrier are produced by aslide 118 which moves forwardly and rearwardly inj a guideway ,on theframe of the machine' This 7 slide carries at its rear end a qroller 19which engages in.

a groove in the vertical face of one of the cam disks, while the-forwardend of the slide is provided with a stud 20. This stud slidesin a sleeve21 atthe upper end of the stem 22, and the stem isslidin-gly mounted inan arm 23 projecting upwardly from the yoke 10. The: forward andrearward movements of the ,slidelS arethuscommuni'cate'd as rockingmovements i to the looper carrier, and the engagement of the stud 20with the sleeve '21 is 'such as a not to interfere with the longitudinalmovements ofthe loopercarrien. The:

stud 20 is of suchlengthfas to remainin engagement with the-sleeve 21many position. the looper carrier 'may occupy in its transverse.movements. f

V The .bearing member; 11 is utilized as means for heatingthe looper.For this purpose a u-shaped'steam passage 21'is formed withinthe'bearing member, this passage being connected at its .ends with pipes25,

through .Which steam orother heating 'fiuid' 'looper. V in question waxfrom the thread frequently drops and colmay be introduced anddischargedli The heat of the bearing member is conducted d1- rectlythrough the looper carrier to'the In machines of the type lects upon thechannel guide so that it is necessary for the operator to remove it. A

feature of the present inventionresides in theprovision of means bywhichthe channel guide is heated so that any wax which falls upon itismelted and-may thus run away. In order to heat the channel guide, saidchannel guide is fixed to a plate 26, which in .turn is adjustably fixedto the; lever. 27 by whichthe channel guide is supported and .actuatedin the same manner as in the patent to. Eppler 1 0.1,108,560.issuedAugust25, 1914;. As1a ;convenient means for heating thechannel guide,

thep1ate26 is provided with a sleeve or re cess 28', in which asprings-pressed plunger 29 isreceived and is adapted'toslide. The

head ofsthisplunger is held; in engagement bodiment, it will beunderstoodthat except as hereinafter definedin the claims the in ventionis not limitedto .any particular machine or particular construction andarrangementof parts.

The natureandsCope iof the present iii-- vention having been indicatedand: its pre ferredf embodiment having been specifically described,whatis claimed as new is 1. A waxed thread sewing machine having, incombination, ahlooper, a channel guide, a heatingbody,a looper carrier:in contact therewith, a channel guidecarrier and a conductive metallicconnection forheating-the channel guide. carrier directly from'theheating body.

2'. sewing machine having, in combinaQ tion, archannel guide, means-for.supporting and actuating the channel guide, a station ary heating body,.and a springpressed member,conductivelyv connecting said means and theheating body to conduct heat tothe' channel guide. V p 7 i 3. A sewlngmachine having, in combination,a looper, a channelguide, a cylindrical.

bearing member and heating body, a looper carrier movably supported. onsaid body, means for supporting and actuating the channel guide, and aconductive metallic connection between said body and said means.

4. A sewing machine having, in combination, a looper, a looper carrier,a cylindrical bearing for said looper carrier, means for sliding androcking said looper carrier on the bearing, a steam passage formed inone end of said bearing through which steam is passed to heat thelooper, a channel guide, a channel guide carrier having a recess formedtherein, and a plunger seated in said recess and engaging the other endof said bearing, whereby the channel guide is heated through metallicconductivity.

5. A sewing machine having, in combination, a looper, a looper carrier,a cylindrical bearing for said looper carrier, means for sliding androcking said looper carrier on said bearing, a steam passage formed inone end of said bearing through which steam is passed to heat thelooper, a channel guide, a channel guide carrier having a recess formedtherein, a plunger seated in said recess and adapted to engage the otherend of the bearing of the looper carrier, and a spring for holding saidplunger in engage ment with said bearing in all positions of the channelguide, whereby the channel guide is heated during its movement.

6. A sewing machine having, in combination, a looper, a looper carrier,a cylindrical bearing for said looper carrier, means for sliding androcking said looper carrier on the bearing, and heating devices for saidlooper comprising means for passing steam into the bearing of the loopercarrier, said means including inlet and outlet steam passages formed inone end of said bearing and extending through a part of the length ofsaid bearing.

7 A sewing machine having, in combination, a looper, a looper carriercomprising two sleeves connected by a yoke, a cylindrical bearing memberembraced at its end portions by the sleeves of said carrier, devicesconnected to said yoke, means for actuating said devices to rock andslide said loopercarrier on its bearing, and means for heat ing saidbearing, whereby heat is conducted to the looper through the sleeves ofthe looper carrier.

8. A sewing machine having, in combination, a looper, a looper carriercomprising two sleeves connected by a yoke, a cylindrical bearing memberembraced at its end portions by said sleeves, a block secured to saidyoke, means engaging said block to slide the looper carrier on itsbearing, an upstanding arm on said yoke, means engaging said arm to rockthe looper on its bearing, and means for heating said bearing wherebheat is conducted to the looper through the sleeves of the loopercarrier.

ANDREW EPPLER.

